<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea @keyup.enter="postComment" v-model.trim="content" placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120"></textarea>

        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>

        <div class="cmt-list">
        <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time+Math.random()">
            <div class="cmt-title">
            第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;发表时间：{{ item.add_time | dateFormat }}
            </div>
            <div class="cmt-body">
            {{ item.content === 'undefined' ? '此用户很懒，嘛都没说': item.content }}
            </div>
        </div>

        </div>

        <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
    </div>
</template>
<script>
import {Toast} from 'mint-ui';
export default {
    data(){
        return {
            comments:[],
            pageIndex:1,
            content:''      //评论内容
        }
    },
    methods:{
        getComents(){
            this.$http.get(`api/getcomments/${this.id}?pageindex=${this.pageIndex}`).then((res)=>{
                if(res.body.status==0){
                    this.comments=this.comments.concat(res.body.message);
                }
            });
        },
        getMore(){
            this.pageIndex++;
            this.getComents();
        },
        postComment(){
            if(this.content==''){
                Toast("评论内容不能为空!!!");
                return false;
            }
            this.$http.post(`api/postcomment/${this.id}`,{content:this.content}).then((res)=>{
                if(res.body.status==0){
                    this.comments.unshift({
                        user_name:'duans',
                        add_time:Date.now(),
                        content:this.content
                    });
                    // 清空评论框
                    this.content='';
                }
            });
        }
    },
    created(){
        this.getComents();
    },
    props:['id']
}
</script>
<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>


